HP Error Codes HP COLOR 4600, 5500 ERROR 40 BAD SERIAL TRANSMISSION / BAD EIO CARD • A serial data error (parity framing, or line over run) has occurred during the reception of data • A connection with the EIO card in slot X has been abnormally interrupted • Check that all cables are connection to the EIO ports and that the EIO board is seated properly HP 8500 • An EIO accessory connection has been abnormally broken while transferring data from the computer to the printer • Print an EIO configuration page to verify that the EIO accessories are installed properly • Check that all cables are connected to the EIO ports and that the EIO accessory is seated properly • Turn the printer off and on to reset it (data will be lost)...